Gear drive for traction wheels and jack shafts



4 C. OWENS.

GEAR DRIVE FOR TRACTION WHEELS AND JACK SHAFTS.

APPLICATION FILED APR. 15. 1920.

Patented Feb. 7, 1922.

UNITED T Es;

' CHARLES owhusmr cHATTANooeh; Tennessee.

EFICE- em nnrvn FOR raec'rion wnnnns mn :rAcx exams. 3i

Application filed M115,

useful Improvements in Gear Drives for Traction NVheels and Jack Shafts, of which the, following is a specification. One'object of" my inventionis to provide a gear drive for truck or tractor wheels which will permit the wheel to be'reinoved asreadily as an ordinary wheel, it having com bined therewith a portion, or portions of the gear drive which will remain permanently mounted on ith'elwheel whenremovedand will readily. couple u'p with cooperating members which; remain on the'fixed housing orframe. Another object of theinventio'n is to pro-' vide a drive mechanism which will impart driving power to a traction wheel and also to a jack shaft which is closely associated with the driving'mechanism of the tractor or truck wheel. g

' The invention is shown in the accompanyingflrawings of which:. igure'l is a central longitudinal section along the drive shaft or axle showing a part of the wheel, the housing in part and the gearing;

Fig. 2 is a side elevation of the parts shown in Fig. 1 with the gearing represented in dotted lines. I

In these drawings 1 indicates a drive shaft or axle of a truck or tractor which may be driven through the differential as in ordinary practice. This drive shaft extends out through a housing or frame 2 and it is journaled in roller bearings 3 mounted in a recess in the housing. The shaft at its outer end carries a drive pinion-4 which is keyed thereto and which is held in place by a nut 6. This nut is located in a counter bore 7 of a sleeve extension 8 of the driving pinion, these parts preferably being formed in one piece. A portion of the traction wheel is indicated at 9 and this is journaled on roller bearings 10 arranged about the sleeve extension 8 of the driving pinion. These roller bearings are within the hub 11 of the traction wheel and the wheel is held in place by a nut 12 engaging a thread 13 on the end of the sleeve extension of the driving pinion. A suitable cap 14 may be slipped onto the hub to keep dust from the bearings. The wheel carries pins 15, these I shaft 26 which "is 1920. serial No; 374,154.

' Specification of Letters Patent. "i Patente d Feb: 7;

beingniounted-in 16' i 1;

pinions 20 are connected together'tdmov e as one body, the former meshing with-the drive pinion 4t and the, latter meshing with a rack 21', fixed to thehousingc2' Rotation of the drive shaft 1, will through the drive pinion erotate the gear 19. and as the p1n10Il 20, connected with this gear meshes with the'rack 21, the pinion with the gear must roll about this rack*21 and thus' the traction wheel will besetin, revolu t1 on toumpel thetractor or truck.

The. housing 2 is provided-withfa hb 'ibwj 1% boss 22 ;which; forms a. bearing socket for the hub .23 ;of. a gear wheel :24.= which {lies between the overhanging. rack 21- andwthe ing ;with .'and being driven; from jth e-drive provided'with a longitudinal bore,,;or-.openln'ggrooved' as at 2 5 to receive the "ack; provided With ribs 2 to fit ;into the grooves so thattheturning. of the hub through the operation of the ear 24 and pinion 4 will drive'the jack shai i.

Any suitable form of cap may be used at 26' to exclude-dust from the boss 22.

It will be noticed from the above that the traction wheel and the jack shaft are both driven from the same pinion and the ack shaft may be utilized to drive any suit-,

able mechanism such as the operative parts of a binder or any other implement which may be attachedto the tractor as a trailer. The traction wheel readily may be removed by unscrewing the nut 12 and when so .re-

moved it will carry with it the planetary gearing which is made up of. any desired number of sets of gears and pinions 19 and 20, and the wheel may be readily slipped back into place and the gears 19 and pinions 20 caused to mesh respectively with the drive pinion 4 and toothed rack 21.

I claim as my invention 1. In combination with a drive shaft a.

pinion having a sleeve extension and together therewith arranged coaxially with and driven from said drive shaft, a traction wheel having its hub mounted on the sleeve extension, a frame or housing, a circular rack fixed thereto and planetary gearing mounted on the tractionwheel and meshing respectively'with the drive pinion and with 7 5 faceoffthe housing, the said gear 2i mesh} the rack, so as to turn the wheel when the axle or drive wheel is rotated, said traction wheel being wholly supported by the sleeve extension and lying wholly onthe outer side of said rack and housing to be removable with its gearing as one body, substantially as described. 7

2. In combination witha drive shaft, a-pinion having an outwardly extending sleeve extension, said parts being arranged coaxially with and driven by the said drive shaft, a traction wheel'having its hub on the sleeve extension out beyond the pinion, a frame or housing at the inner side of the traction wheel,-a circular rack fixed to said frame and planetary gearing mounted on the inner side of the traction wheel and" meshing with the drive pinion and also with the rack anda nut mounted on the 1 sleeve extension to hold the traction wheel in place, said traction wheel with its planetaries "being removable without removing the rack or housing, or the pinion. "8. In combination a load bearing axle driven through differential mechanism, a traction wheel journalled to turn about the said axle, gearing between the load bearing axle and traction wheel to propel the vehicle, a jack shaft andgearing between the said-load bearing axle and'jack shaft wherebythe' latter will be driven from and synchronize with-the various speeds of said axle, in turning corners, substantially as described. 7 v 7 4L In combination a drive shaft, a traction shaft, .a rack, ahousingto which the rack is fixed, planetary gearing between the toothed means and the rack and'mounted on the traction wheel and a gear for transmitting motion-fromthe toothed means to the jack shaft, substantially as described.

5. In combination a drive shaft, a traction wheel, a housing, a'rack fixed to the housing, toothed means connected with the shaft,

planetary gearing Carried by the traction wheel and engaging the rack, a gear 107' cated between the rack and the housing meshing with .said tooth'ed'means' and Ia jack shaft driven by the said gear, substantially as described. 7

'6. In combination with a rotating axle,

toothed means connected therewith, a tra'ction wheel, a housing, a ra'ckmounted on the housing and planetary gearingon' the traction wheel meshing with the rack and toothed'means, said traction wheel-being located on the outer side of :the rack and mounted to be removed with the planetary gearing as one body, a jack-shaft and agear on'the jack shaftmeshing with the toothed ,oi-ifAia Es ownus.

whereof, I afiix my signa- 

